Protections for the citizenry from unlawful or repressive acts by the government are contained primarily in

The answer is the amendments in the constitution or just constitution. Important and deep-rooted rules governing the conduct of an organization or nation state, and founding its concept, character, and structure. It is usually a short document, general in nature and exemplifying the aspirations and values of its writers and subjects. The eldest constitution is that of the US which is made during 1787.

Both Long and Grant were unaware of frost's incompetence. Frost or Frost's legal representative will not be liable because Long did not have authority to enter into the contract.